2.5k citations
- Centre National de la Recherche ScientifiqueFR865 papers
- Laboratoire de Mathématiques et Physique ThéoriqueFR696 papers
- Institut Denis PoissonFR468 papers
- Université d'OrléansFR389 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR70 papers
- GREMAN, Matériaux, Microélectronique, Acoustique, NanotechnologiesFR64 papers
- Far Eastern Federal UniversityRU58 papers
- Centre de Physique ThéoriqueFR55 papers
- Uppsala UniversitySE43 papers
- Laboratoire AstroParticule et CosmologieFR38 papers
- Idiap Research InstituteCH37 papers
- Institute for Theoretical and Experimental PhysicsRU35 papers
8 papers · 2 filters
Semi-classical analysis of black holes in Loop Quantum Gravity: Modelling Hawking radiation with volume fluctuations
Pierre Heidmann, Hongguang Liu, Karim Noui
We introduce the notion of fluid approximation of a quantum spherical black hole in the context of Loop Quantum Gravity. In this limit, the microstates of the black hole are intert…
Aspherical Photon and Anti-Photon Surfaces
G. W. Gibbons, C. M. Warnick
In this note we identify photon surfaces and anti-photon surfaces in some physically interesting spacetimes, which are not spherically symmetric. All of our examples solve physical…
Photon Spheres and Sonic Horizons in Black Holes from Supergravity and Other Theories
M. Cvetic, G. W. Gibbons, C. N. Pope
We study closed photon orbits in spherically-symmetric static solutions of supergravity theories, a Horndeski theory, and a theory of quintessence. These orbits lie in what we shal…
Analytic continuation of the rotating black hole state counting
Jibril Ben Achour, Karim Noui, Alejandro Perez
In loop quantum gravity, a spherical black hole can be described in terms of a Chern-Simons theory on a punctured 2-sphere. The sphere represents the horizon. The punctures are the…
Conformal and projective symmetries in Newtonian cosmology
C. Duval, G. W. Gibbons, P. A. Horváthy
Definitions of non-relativistic conformal transformations are considered both in the Newton-Cartan and in the Kaluza-Klein-type Eisenhart/Bargmann geometrical frameworks. The symme…
Bouncing Universes in Scalar-Tensor Gravity Around Conformal Invariance
B. Boisseau, H. Giacomini, D. Polarski
We consider the possibility to produce a bouncing universe in the framework of scalar-tensor gravity when the scalar field has a nonconformal coupling to the Ricci scalar. We prove…